//go:build exclude

package utilities

import (
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi/internals"
)

type envParser func(v string) interface{}

func ParseEnvBool(v string) interface{} {
	b, err := strconv.ParseBool(v)
	if err != nil {
		return nil
	}
	return b
}

func ParseEnvInt(v string) interface{} {
	i, err := strconv.ParseInt(v, 0, 0)
	if err != nil {
		return nil
	}
	return int(i)
}

func ParseEnvFloat(v string) interface{} {
	f, err := strconv.ParseFloat(v, 64)
	if err != nil {
		return nil
	}
	return f
}

func ParseEnvStringArray(v string) interface{} {
	var result pulumi.StringArray
	for _, item := range strings.Split(v, ";") {
		result = append(result, pulumi.String(item))
	}
	return result
}

func GetEnvOrDefault(def interface{}, parser envParser, vars ...string) interface{} {
	for _, v := range vars {
		if value, ok := os.LookupEnv(v); ok {
			if parser != nil {
				return parser(value)
			}
			return value
		}
	}
	return def
}

// PkgVersion uses reflection to determine the version of the current package.
// If a version cannot be determined, v1 will be assumed. The second return
// value is always nil.
func PkgVersion() (semver.Version, error) {
	// emptyVersion defaults to v0.0.0
	if !SdkVersion.Equals(semver.Version{}) {
		return SdkVersion, nil
	}
	type sentinal struct{}
	pkgPath := reflect.TypeOf(sentinal{}).PkgPath()
	re := regexp.MustCompile("${packageRegex}")
	if match := re.FindStringSubmatch(pkgPath); match != nil {
		vStr := match[1]
		if len(vStr) == 0 { // If the version capture group was empty, default to v1.
			return semver.Version{Major: 1}, nil
		}
		return semver.MustParse(fmt.Sprintf("%s.0.0", vStr[2:])), nil
	}
	return semver.Version{Major: 1}, nil
}

// isZero is a null safe check for if a value is it's types zero value.
func IsZero(v interface{}) bool {
	if v == nil {
		return true
	}
	return reflect.ValueOf(v).IsZero()
}

func CallPlain(
	ctx *pulumi.Context,
	tok string,
	args pulumi.Input,
	output pulumi.Output,
	self pulumi.Resource,
	property string,
	resultPtr reflect.Value,
	errorPtr *error,
	opts ...pulumi.InvokeOption,
) {
	res, err := callPlainInner(ctx, tok, args, output, self, opts...)
	if err != nil {
		*errorPtr = err
		return
	}

	v := reflect.ValueOf(res)

	// extract res.property field if asked to do so
	if property != "" {
		v = v.FieldByName("Res")
	}

	// return by setting the result pointer; this style of returns shortens the generated code without generics
	resultPtr.Elem().Set(v)
}

func callPlainInner(
	ctx *pulumi.Context,
	tok string,
	args pulumi.Input,
	output pulumi.Output,
	self pulumi.Resource,
	opts ...pulumi.InvokeOption,
) (any, error) {
	o, err := ctx.Call(tok, args, output, self, opts...)
	if err != nil {
		return nil, err
	}

	outputData, err := internals.UnsafeAwaitOutput(ctx.Context(), o)
	if err != nil {
		return nil, err
	}

	// Ingoring deps silently. They are typically non-empty, r.f() calls include r as a dependency.
	known := outputData.Known
	value := outputData.Value
	secret := outputData.Secret

	problem := ""
	if !known {
		problem = "an unknown value"
	} else if secret {
		problem = "a secret value"
	}

	if problem != "" {
		return nil, fmt.Errorf("Plain resource method %q incorrectly returned %s. "+
			"This is an error in the provider, please report this to the provider developer.",
			tok, problem)
	}

	return value, nil
}
